10 green royals
9. Princess Maha Chakri Sirindhorn of Thailand
Princess Sirindhorn (sister to Princess Chulabhorn) has been involved in projects ranging from preserving the biodiversity of plant life in her country to improving water management. In an address on World Food Day in 2004, she spoke of how “biodiversity plays a key role in sustainable development and poverty alleviation.” Recently she visited the Heliocentris headquarters in Berlin to talk about the future of renewable energy.